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Screen time impairs the relationship between physical fitne..:

Macarena M. Aguilar ; Felipe A. Vergara ; Erikson J.A. Velásquez..
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0021-75572015000400339&lng=en&tlng=en.  , 2015
Link: https://doi.org/10.1016/j.jped.2014.10.004